package com.ming.learn.from.carl.string;

import java.util.Arrays;

/*
题目：344. 反转字符串
 */
public class Of20201226LeetCode344 {
    /*
    编写一个函数，其作用是将输入的字符串反转过来。输入字符串以字符数组 char[] 的形式给出。
    不要给另外的数组分配额外的空间，你必须原地修改输入数组、使用 O(1) 的额外空间解决这一问题。
    你可以假设数组中的所有字符都是 ASCII 码表中的可打印字符。
    示例 1：
    输入：["h","e","l","l","o"] 输出：["o","l","l","e","h"] 示例 2：
    输入：["H","a","n","n","a","h"] 输出：["h","a","n","n","a","H"]
     */
    public static void main(String[] args) {
        char[] chars = {'a', 'b', 'c'};
        reverseString(chars);
        for (char aChar : chars) {
            System.out.print(aChar+"\t");
        }
    }
    private static void reverseString(char[] s) {
        for (int i = 0, j = s.length - 1; i < j; i++, j--) {
            s[i] ^= s[j];
            s[j] ^= s[i];
            s[i] ^= s[j];
//            char tmp = s[i];
//            s[i] = s[j];
//            s[j] = tmp;
        }
    }
}
